Microsoft Intern interview questions

Met with recruiter in career fair, and get the first round on campus interview. The interview lasts for 30 minutes. The interviewer asked about my preference for the job and then a design question.

It was an Assessment Center. 7 group of people ( about 6 people every group) were selected to join the assessment center to complete 3 case studies. about 6 people are assessors, they walked around among different groups during the case discussions, and made records on how every candidate was performing.